Pyrite Nodules / Weathered Pyrite
Iron Sulfide (FeS2)
mineral
Category
Anthropic Metallic Specimen
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Rounded iron-rich pebble
Likely hematite/goethite-bearing quartzite or ironstone; exact identification requires testing
mineral
Ironstone / limonite-rich concretion
Hydrated iron oxides, chiefly limonite/goethite (FeO(OH)·nH₂O), possibly with hematite
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Aura Quartz (Titanium/Rainbow Quartz)
SiO2 (Silicon Dioxide) with metallic coating
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Tiger Iron
Composite rock (Quartz, Tiger's Eye, Hematite, and Jasper)
metamorphic
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Likely galena-bearing ore or metallic sulfide specimen
Probably galena (PbS), possibly mixed with pyrite or other sulfides
mineral
Gold Ore
Native Gold (Au) in Matrix
mineral
Iron meteorite candidate
Probable iron-rich meteorite; possible stony-iron or weathered nickel–iron alloy
meteorite
Pyrite (on Shale/Matrix)
Iron Disulfide (FeS2)
mineral
Likely polished dark metallic mineral specimen
Indeterminate from image; possibly hematite, magnetite, or galena
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Rainbow Pyrite
Iron Sulfide (FeS2) with iridescent oxidation
mineral
Iron meteorite fragment (likely weathered meteorite)
Fe–Ni metal, commonly kamacite with taenite; possible stony-iron or iron-oxide fusion crust
meteorite
Pyrite
Iron Sulfide (FeS2)
mineral
Likely hematite-rich iron ore
Hematite (Fe₂O₃), possibly with magnetite and/or goethite
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Schist (Greenschist / Mica Schist)
Schist (variable mineral composition, commonly containing quartz, feldspar, mica, chlorite)
metamorphic
Gossan / Iron-Rich Weathered Rock
Hydrated Iron Oxides / Limonite / Goethite
mineral
Green Fluorite
Calcium fluoride (CaF2)
mineral
Raw Fluorite
Calcium Fluoride (CaF2)
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Mica Schist with Garnet
Almandine-Mica Schist
metamorphic
Gold-Bearing Quartz Ore
Crystalline Silicon Dioxide (SiO2) with Trace Aurum (Au)
mineral
Muscovite Mica Schist
Metamorphic rock rich in muscovite mica (KAl2(AlSi3O10)(F,OH)2)
metamorphic
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Copper-bearing basalt or volcaniclastic rock
Cuprite–malachite-bearing mafic volcanic rock; likely basalt with copper sulfides/oxides
igneous
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Anthropogenic / Non-Natural
Pyrite (likely)
Iron disulfide, FeS₂; commonly called fool’s gold
mineral
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Weathered metallic-looking rock, possibly hematite-bearing ironstone
Hematite-rich ironstone; hematite Fe₂O₃, potentially with magnetite Fe₃O₄ and quartz
mineral
Milky Quartz with Mica and Pyrite
Quartz (SiO2) with Muscovite (KAl2(AlSi3O10)(OH)2) and Pyrite (FeS2)
mineral
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation
mineral
Copper Nugget
Native Copper (Cu)
mineral
Biotite-bearing metamorphic rock, likely schist
Mica schist; chiefly quartz, feldspar, and biotite mica
metamorphic
Magnetite (likely in Hematite or Ironstone)
Magnetite (Fe3O4)
mineral
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Raw galena specimen
Galena (lead sulfide, PbS)
mineral